import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'

Vue.use(VueRouter)

  const routes = [
    { path: '/', redirect: '/login'},
    { path: '/login', component: Login},
    { path: '/home',
      component: Home, 
      redirect: '/welcome',
      children: [
      { path: '/welcome',component: Welcome},
      { path: '/users', component: Users},
      { path: '/rights', component: Rights},
      { path: '/roles', component: Roles},
     
    ]
    }
]

const router = new VueRouter({
  routes
})
// 挂载路由导航守卫
router.beforeEach((to,from,next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  if(to.path === '/login') return next();
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  //
  next()
})

export default router
